EP 0316182 A1 19890517 - Movable stand.
Title (en)
Movable stand.
Title (de)
Teleskoptribüne.
Title (fr)
Tribune à gradins télescopiques.
Publication
Application
Priority
JP 17128887 U 19871111
Abstract (en)
A movable stand comprising a plurality of sections and capable of being contracted, when not used, to a state with each section held right under the section immediately behind in use and also being elongated, when used, to a staircase-like form with each stair constituted by each section, is disclosed. The invention concerns an apparatus for causing straight movement of each section of the movable stand, which comprises a pair of, i.e., left and right, horizontal sprocket assemblies (11, 12) provided on the rear end of the foremost section in use, and a pair of chains (13, 18) having front end portions (13a, 18a) secured to the opposite inner side walls of the section immediately behind the foremost section in use, intermediate portions (13b, 18b) passed round the pair sprocket assemblies such as to cross each other between the sprocket assemblies and rear end portions (13c, 18c) secured. The sprocket assemblies and chains function in combination as a parallel rule to ensure straight movement of the section.
IPC 1-7
IPC 8 full level
CPC (source: EP)
E04H 3/123 (2013.01)
Citation (search report)
- [YD] US 3400502 A 19680910 - SCAGGS ROBERT T, et al
- [Y] DE 2935440 A1 19810319 - TELEKON GMBH
- [A] US 3667171 A 19720606 - MCCLELLAND ROBERT G, et al
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
EP 0316182 A1 19890517; EP 0316182 B1 19930609; DE 3881642 D1 19930715; DE 3881642 T2 19930923; JP H0175545 U 19890522; JP H0432445 Y2 19920804
DOCDB simple family (application)
EP 88310616 A 19881110; DE 3881642 T 19881110; JP 17128887 U 19871111